Low
284 on Worcester Bosch Greenstar CDi Compact

Your boiler is currently checking its internal safety systems before it begins the ignition process to heat your home.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

Gas valve(s) opened, first safety time started

From this model's manual
Verified against the Worcester Bosch Greenstar Cdi Compact installation & service manual, page 65.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

No action required; this is a normal operational status message.Wait for the boiler to complete its internal safety checks.If the code persists and the boiler fails to fire, try a system reset.

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